My fave combo, was the one that I used all the way to 5k victories!
Mountain cottontail with flurry / dodge / burrow - goes first as a lot of teams (at that time) had shiny new Val'kyrs, and this pet used to almost completely negate the ascension trick, while chewing the Val'kyr's face off nice and fast
If they swapped out, it meant a two-turn advantage!
Lil' Raggy with Hammer / magma trap and sons. STUN DIVE DIVE DIVE SMACK!!! Nuff said!
Wolvar pup - strong against dragons and beasts, with a snare/stun and decent damage.
I loved that team, and when stun hit, it was basically game over. The only issues I had were with double imp teams, that DOT SWAP trick was a nightmare!
Edited for typo's